<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="textml; charset=utf-8" />
<title></title>
<style>
#div1{
	width:100px;
	height:200px;
	background:red;
}

</style>
<script type="text/javascript">
	function xian(){
		var odiv=document.getElementById('div1');
		if(odiv.style.display=='none')
			odiv.style.display='block';
		else                                                                                                            
            odiv.style.display='none';
	}
</script>
</head>
<body>

<input type="button" value="显示隐藏1" onclick="xian()"/>
<div id="div1">
</div>
</body>
</html>
